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Ext.ux.ManagedIframe 4.0 alpha2 for Ext 4.x

Well, I figured it's time to get this rolling again!

With all the new goodies built into Ext 4 now, I'm able to shed a fair amount of baggage originally required to maintain compatibility for legacy Ext releases (1-3.x). The suite will be much lighter-weight than previous version without sacrificing too many features.

A few words about the Alpha Roadmap:

Alpha 1 provides a basic MIF.Component only, with simple support for masking, shimming (during resizing and the presence of overlayed menus) and event bubbling. There will be no Panel, Window, or Portlet subclasses (an inheritance nightmare that does little more now than bloat your code!). Simply nest the Component in any layout!

Alpha 2 (targeted for early-July) will introduce:

ux.ManagedIframe.Element.

This class will add additional support for:

Normalized 'dataavailable' and 'load' events (formerly the 'domready' and 'documentloaded' events) for all browsers as well as the legacy focus, blur, resize, and other events.